Etymology
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revolutionize (v.)

1797, "to cause (a state, etc.) to undergo a (political) revolution, effect a change in the political constitution of;" see revolution + -ize. Transferred sense of "change a thing completely and fundamentally, effect radical change in" is by 1799. Related: Revolutionized; revolutionizing.

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permutate (v.)

1898 in the modern sense of "change the order of" (earlier "to change, alter, 16c. but obsolete thereafter), from Latin permutatus, past participle of permutare "change thoroughly, exchange" (see permutation). "Probably regarded by those who use it as a back-formation from permutation" [OED]. Compare permute. Related: Permutated; permutating.

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mutable (adj.)
late 14c., "liable to change," from Latin mutabilis "changeable," from mutare "to change," from PIE root *mei- (1) "to change, go, move," with derivatives referring to the exchange of goods and services as regulated by custom or law (compare Latin mutuus "done in exchange").
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permutation (n.)

late 14c., permutacioun, "interchange, concurrent change; exchange of one thing, position, condition, etc., for another," from Old French permutacion "change, shift" (14c.), from Latin permutationem (nominative permutatio) "a change, alteration, revolution," noun of action from past participle stem of permutare "change thoroughly, exchange," from per "thoroughly" (see per) + mutare "to change" (from PIE root *mei- (1) "to change, go, move"). The sense of "a linear arrangement of objects resulting from a change of their order" is by 1710, originally in mathematics.

Permutation differs from combination in this, that in the latter there is no reference to the order in which the quantities are combined, whereas in the former this order is considered, and consequently the number of permutations always exceeds the number of combinations. [Century Dictionary]
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reprobate (adj.)

early 15c., "rejected as worthless," from Late Latin reprobatus, past participle of reprobare "disapprove, reject, condemn," from Latin re- "back, again," here perhaps indicating "opposite of, reversal of previous condition" (see re-) + probare "prove to be worthy" (see probate (n.)). The meaning "abandoned in character, morally depraved, unprincipled" is by 1650s.

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troposphere (n.)
1914, from French troposphère, literally "sphere of change," coined by French meteorologist Philippe Teisserenc de Bort (1855-1913) from Greek tropos "a turn, change" (from PIE root *trep- "to turn") + sphaira "sphere" (see sphere). Related: Tropopause.
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mutate (v.)

1818, "to change state or condition, undergo change," back-formation from mutation. In the genetic sense, "undergo mutation," 1913, from Latin mutatus, past participle of mutare "to change" (from PIE root *mei- (1) "to change, go, move"). Related: Mutated; mutating.

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volte-face 
a reversal of opinion, 1819, French (17c.), from Italian volta faccia, literally "turn face," from volta, imperative of voltare "to turn" (from Vulgar Latin *volvita, from Latin volvere "to roll," from PIE root *wel- (3) "to turn, revolve") + faccia (see face).
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mutant (n.)

1900 in the biological sense, "individual or form which has arisen by or undergone (genetic) mutation," from Latin mutantem (nominative mutans) "changing," present participle of mutare "to change" (from PIE root *mei- (1) "to change, go, move"). In the science fiction sense, it is attested by 1954. As an adjective from 1903.

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metabolism (n.)

1878 in the physiology sense of "the sum of the chemical changes within the body by which the protoplasm is renewed, changed, or prepared for excretion," from French métabolisme, from Greek metabole "a change," from metaballein "to change," from meta "change" (see meta-) + ballein "to throw" (from PIE root *gwele- "to throw, reach"). The word also has been used in theology, poetics, and entomology.

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